Finding the Third Proportional to 91,148,233.50 and 199,585,518

Step by Step Solution

1. Step 1: Write the proportion equation
   91,148,233.50 : 199,585,518 = 199,585,518 : x
2. Step 2: Convert to fraction form
   91,148,233.50/199,585,518 = 199,585,518/x
3. Step 3: Cross multiply
   91,148,233.50x = 199,585,518 × 199,585,518
4. Step 4: Simplify right side
   91,148,233.50x = 39,834,378,995,328,320
5. Step 5: Solve for x
   x = 39,834,378,995,328,320/91,148,233.50
6. Step 6: Final answer
   x = 437,028,535.45