Finding the Third Proportional to 921,155,658 and 1,415,155,221

Step by Step Solution

1. Step 1: Write the proportion equation
   921,155,658 : 1,415,155,221 = 1,415,155,221 : x
2. Step 2: Convert to fraction form
   921,155,658/1,415,155,221 = 1,415,155,221/x
3. Step 3: Cross multiply
   921,155,658x = 1,415,155,221 × 1,415,155,221
4. Step 4: Simplify right side
   921,155,658x = 2,002,664,299,523,558,912
5. Step 5: Solve for x
   x = 2,002,664,299,523,558,912/921,155,658
6. Step 6: Final answer
   x = 2,174,078,053.07