Finding the Third Proportional to 921,155,655 and 1,415,155,216.50

Step by Step Solution

1. Step 1: Write the proportion equation
   921,155,655 : 1,415,155,216.50 = 1,415,155,216.50 : x
2. Step 2: Convert to fraction form
   921,155,655/1,415,155,216.50 = 1,415,155,216.50/x
3. Step 3: Cross multiply
   921,155,655x = 1,415,155,216.50 × 1,415,155,216.50
4. Step 4: Simplify right side
   921,155,655x = 2,002,664,286,787,161,856
5. Step 5: Solve for x
   x = 2,002,664,286,787,161,856/921,155,655
6. Step 6: Final answer
   x = 2,174,078,046.33