Finding the Third Proportional to 402,118.50 and 837,312

Step by Step Solution

1. Step 1: Write the proportion equation
   402,118.50 : 837,312 = 837,312 : x
2. Step 2: Convert to fraction form
   402,118.50/837,312 = 837,312/x
3. Step 3: Cross multiply
   402,118.50x = 837,312 × 837,312
4. Step 4: Simplify right side
   402,118.50x = 701,091,385,344
5. Step 5: Solve for x
   x = 701,091,385,344/402,118.50
6. Step 6: Final answer
   x = 1,743,494.48