Finding the Third Proportional to 191,404,516 and 419,862,320

Step by Step Solution

1. Step 1: Write the proportion equation
   191,404,516 : 419,862,320 = 419,862,320 : x
2. Step 2: Convert to fraction form
   191,404,516/419,862,320 = 419,862,320/x
3. Step 3: Cross multiply
   191,404,516x = 419,862,320 × 419,862,320
4. Step 4: Simplify right side
   191,404,516x = 176,284,367,755,782,400
5. Step 5: Solve for x
   x = 176,284,367,755,782,400/191,404,516
6. Step 6: Final answer
   x = 921,004,224.14