Finding the Third Proportional to 921,155,656 and 1,415,155,218

Step by Step Solution

1. Step 1: Write the proportion equation
   921,155,656 : 1,415,155,218 = 1,415,155,218 : x
2. Step 2: Convert to fraction form
   921,155,656/1,415,155,218 = 1,415,155,218/x
3. Step 3: Cross multiply
   921,155,656x = 1,415,155,218 × 1,415,155,218
4. Step 4: Simplify right side
   921,155,656x = 2,002,664,291,032,627,456
5. Step 5: Solve for x
   x = 2,002,664,291,032,627,456/921,155,656
6. Step 6: Final answer
   x = 2,174,078,048.58