Finding the Third Proportional to 402,486.50 and 838,043

Step by Step Solution

1. Step 1: Write the proportion equation
   402,486.50 : 838,043 = 838,043 : x
2. Step 2: Convert to fraction form
   402,486.50/838,043 = 838,043/x
3. Step 3: Cross multiply
   402,486.50x = 838,043 × 838,043
4. Step 4: Simplify right side
   402,486.50x = 702,316,069,849
5. Step 5: Solve for x
   x = 702,316,069,849/402,486.50
6. Step 6: Final answer
   x = 1,744,943.17