Finding the Third Proportional to 389,425.50 and 841,131

Step by Step Solution

1. Step 1: Write the proportion equation
   389,425.50 : 841,131 = 841,131 : x
2. Step 2: Convert to fraction form
   389,425.50/841,131 = 841,131/x
3. Step 3: Cross multiply
   389,425.50x = 841,131 × 841,131
4. Step 4: Simplify right side
   389,425.50x = 707,501,359,161
5. Step 5: Solve for x
   x = 707,501,359,161/389,425.50
6. Step 6: Final answer
   x = 1,816,782.31