Finding the Third Proportional to 309,139,227 and 666,704,648.25

Step by Step Solution

1. Step 1: Write the proportion equation
   309,139,227 : 666,704,648.25 = 666,704,648.25 : x
2. Step 2: Convert to fraction form
   309,139,227/666,704,648.25 = 666,704,648.25/x
3. Step 3: Cross multiply
   309,139,227x = 666,704,648.25 × 666,704,648.25
4. Step 4: Simplify right side
   309,139,227x = 444,495,087,998,156,224
5. Step 5: Solve for x
   x = 444,495,087,998,156,224/309,139,227
6. Step 6: Final answer
   x = 1,437,847,575.38