Finding the Third Proportional to 611,818.50 and 930,681

Step by Step Solution

1. Step 1: Write the proportion equation
   611,818.50 : 930,681 = 930,681 : x
2. Step 2: Convert to fraction form
   611,818.50/930,681 = 930,681/x
3. Step 3: Cross multiply
   611,818.50x = 930,681 × 930,681
4. Step 4: Simplify right side
   611,818.50x = 866,167,123,761
5. Step 5: Solve for x
   x = 866,167,123,761/611,818.50
6. Step 6: Final answer
   x = 1,415,725.62