Finding the Third Proportional to 215,392.50 and 441,531

Step by Step Solution

1. Step 1: Write the proportion equation
   215,392.50 : 441,531 = 441,531 : x
2. Step 2: Convert to fraction form
   215,392.50/441,531 = 441,531/x
3. Step 3: Cross multiply
   215,392.50x = 441,531 × 441,531
4. Step 4: Simplify right side
   215,392.50x = 194,949,623,961
5. Step 5: Solve for x
   x = 194,949,623,961/215,392.50
6. Step 6: Final answer
   x = 905,090.12