Finding the Third Proportional to 343,118 and 756,039.50

Step by Step Solution

1. Step 1: Write the proportion equation
   343,118 : 756,039.50 = 756,039.50 : x
2. Step 2: Convert to fraction form
   343,118/756,039.50 = 756,039.50/x
3. Step 3: Cross multiply
   343,118x = 756,039.50 × 756,039.50
4. Step 4: Simplify right side
   343,118x = 571,595,725,560.25
5. Step 5: Solve for x
   x = 571,595,725,560.25/343,118
6. Step 6: Final answer
   x = 1,665,886.74