Finding the Third Proportional to 215,978.91 and 469,651.29

Step by Step Solution

1. Step 1: Write the proportion equation
   215,978.91 : 469,651.29 = 469,651.29 : x
2. Step 2: Convert to fraction form
   215,978.91/469,651.29 = 469,651.29/x
3. Step 3: Cross multiply
   215,978.91x = 469,651.29 × 469,651.29
4. Step 4: Simplify right side
   215,978.91x = 220,572,333,318.07
5. Step 5: Solve for x
   x = 220,572,333,318.07/215,978.91
6. Step 6: Final answer
   x = 1,021,267.94