Finding the Third Proportional to 404,309,032.50 and 621,068,133

Step by Step Solution

1. Step 1: Write the proportion equation
   404,309,032.50 : 621,068,133 = 621,068,133 : x
2. Step 2: Convert to fraction form
   404,309,032.50/621,068,133 = 621,068,133/x
3. Step 3: Cross multiply
   404,309,032.50x = 621,068,133 × 621,068,133
4. Step 4: Simplify right side
   404,309,032.50x = 385,725,625,828,105,664
5. Step 5: Solve for x
   x = 385,725,625,828,105,664/404,309,032.50
6. Step 6: Final answer
   x = 954,036,627.49