Finding the Third Proportional to 399,348.50 and 859,592

Step by Step Solution

1. Step 1: Write the proportion equation
   399,348.50 : 859,592 = 859,592 : x
2. Step 2: Convert to fraction form
   399,348.50/859,592 = 859,592/x
3. Step 3: Cross multiply
   399,348.50x = 859,592 × 859,592
4. Step 4: Simplify right side
   399,348.50x = 738,898,406,464
5. Step 5: Solve for x
   x = 738,898,406,464/399,348.50
6. Step 6: Final answer
   x = 1,850,259.63