Finding the Third Proportional to 389,427.50 and 841,134

Step by Step Solution

1. Step 1: Write the proportion equation
   389,427.50 : 841,134 = 841,134 : x
2. Step 2: Convert to fraction form
   389,427.50/841,134 = 841,134/x
3. Step 3: Cross multiply
   389,427.50x = 841,134 × 841,134
4. Step 4: Simplify right side
   389,427.50x = 707,506,405,956
5. Step 5: Solve for x
   x = 707,506,405,956/389,427.50
6. Step 6: Final answer
   x = 1,816,785.94