Finding the Third Proportional to 640,710 and 863,095.50

Step by Step Solution

1. Step 1: Write the proportion equation
   640,710 : 863,095.50 = 863,095.50 : x
2. Step 2: Convert to fraction form
   640,710/863,095.50 = 863,095.50/x
3. Step 3: Cross multiply
   640,710x = 863,095.50 × 863,095.50
4. Step 4: Simplify right side
   640,710x = 744,933,842,120.25
5. Step 5: Solve for x
   x = 744,933,842,120.25/640,710
6. Step 6: Final answer
   x = 1,162,669.29