Finding the Third Proportional to 838,390.50 and 1,818,562.50

Step by Step Solution

1. Step 1: Write the proportion equation
   838,390.50 : 1,818,562.50 = 1,818,562.50 : x
2. Step 2: Convert to fraction form
   838,390.50/1,818,562.50 = 1,818,562.50/x
3. Step 3: Cross multiply
   838,390.50x = 1,818,562.50 × 1,818,562.50
4. Step 4: Simplify right side
   838,390.50x = 3,307,169,566,406.25
5. Step 5: Solve for x
   x = 3,307,169,566,406.25/838,390.50
6. Step 6: Final answer
   x = 3,944,664.89