Finding the Third Proportional to 290,908,633,784 and 679,693,831,912

Step by Step Solution

1. Step 1: Write the proportion equation
   290,908,633,784 : 679,693,831,912 = 679,693,831,912 : x
2. Step 2: Convert to fraction form
   290,908,633,784/679,693,831,912 = 679,693,831,912/x
3. Step 3: Cross multiply
   290,908,633,784x = 679,693,831,912 × 679,693,831,912
4. Step 4: Simplify right side
   290,908,633,784x = 461,983,705,139,218,114,150,400
5. Step 5: Solve for x
   x = 461,983,705,139,218,114,150,400/290,908,633,784
6. Step 6: Final answer
   x = 1,588,071,481,859.98