Finding the Third Proportional to 99,320,431 and 213,820,044

Step by Step Solution

1. Step 1: Write the proportion equation
   99,320,431 : 213,820,044 = 213,820,044 : x
2. Step 2: Convert to fraction form
   99,320,431/213,820,044 = 213,820,044/x
3. Step 3: Cross multiply
   99,320,431x = 213,820,044 × 213,820,044
4. Step 4: Simplify right side
   99,320,431x = 45,719,011,216,161,936
5. Step 5: Solve for x
   x = 45,719,011,216,161,936/99,320,431
6. Step 6: Final answer
   x = 460,318,292.58