Finding the Third Proportional to 813,259.50 and 1,781,607

Step by Step Solution

1. Step 1: Write the proportion equation
   813,259.50 : 1,781,607 = 1,781,607 : x
2. Step 2: Convert to fraction form
   813,259.50/1,781,607 = 1,781,607/x
3. Step 3: Cross multiply
   813,259.50x = 1,781,607 × 1,781,607
4. Step 4: Simplify right side
   813,259.50x = 3,174,123,502,449
5. Step 5: Solve for x
   x = 3,174,123,502,449/813,259.50
6. Step 6: Final answer
   x = 3,902,965.17