Finding the Third Proportional to 766,243.55 and 1,681,939.69

Step by Step Solution

1. Step 1: Write the proportion equation
   766,243.55 : 1,681,939.69 = 1,681,939.69 : x
2. Step 2: Convert to fraction form
   766,243.55/1,681,939.69 = 1,681,939.69/x
3. Step 3: Cross multiply
   766,243.55x = 1,681,939.69 × 1,681,939.69
4. Step 4: Simplify right side
   766,243.55x = 2,828,921,112,387.60
5. Step 5: Solve for x
   x = 2,828,921,112,387.60/766,243.55
6. Step 6: Final answer
   x = 3,691,934.66