Finding the Third Proportional to 705,217.50 and 1,057,819.50

Step by Step Solution

1. Step 1: Write the proportion equation
   705,217.50 : 1,057,819.50 = 1,057,819.50 : x
2. Step 2: Convert to fraction form
   705,217.50/1,057,819.50 = 1,057,819.50/x
3. Step 3: Cross multiply
   705,217.50x = 1,057,819.50 × 1,057,819.50
4. Step 4: Simplify right side
   705,217.50x = 1,118,982,094,580.25
5. Step 5: Solve for x
   x = 1,118,982,094,580.25/705,217.50
6. Step 6: Final answer
   x = 1,586,719.13