Finding the Third Proportional to 478,748.50 and 708,879

Step by Step Solution

1. Step 1: Write the proportion equation
   478,748.50 : 708,879 = 708,879 : x
2. Step 2: Convert to fraction form
   478,748.50/708,879 = 708,879/x
3. Step 3: Cross multiply
   478,748.50x = 708,879 × 708,879
4. Step 4: Simplify right side
   478,748.50x = 502,509,436,641
5. Step 5: Solve for x
   x = 502,509,436,641/478,748.50
6. Step 6: Final answer
   x = 1,049,631.35