Finding the Third Proportional to 343,120.50 and 756,043.50

Step by Step Solution

1. Step 1: Write the proportion equation
   343,120.50 : 756,043.50 = 756,043.50 : x
2. Step 2: Convert to fraction form
   343,120.50/756,043.50 = 756,043.50/x
3. Step 3: Cross multiply
   343,120.50x = 756,043.50 × 756,043.50
4. Step 4: Simplify right side
   343,120.50x = 571,601,773,892.25
5. Step 5: Solve for x
   x = 571,601,773,892.25/343,120.50
6. Step 6: Final answer
   x = 1,665,892.23