Finding the Third Proportional to 191,404,520 and 419,862,328

Step by Step Solution

1. Step 1: Write the proportion equation
   191,404,520 : 419,862,328 = 419,862,328 : x
2. Step 2: Convert to fraction form
   191,404,520/419,862,328 = 419,862,328/x
3. Step 3: Cross multiply
   191,404,520x = 419,862,328 × 419,862,328
4. Step 4: Simplify right side
   191,404,520x = 176,284,374,473,579,584
5. Step 5: Solve for x
   x = 176,284,374,473,579,584/191,404,520
6. Step 6: Final answer
   x = 921,004,239.99