Finding the Third Proportional to 572,422.50 and 890,143.88

Step by Step Solution

1. Step 1: Write the proportion equation
   572,422.50 : 890,143.88 = 890,143.88 : x
2. Step 2: Convert to fraction form
   572,422.50/890,143.88 = 890,143.88/x
3. Step 3: Cross multiply
   572,422.50x = 890,143.88 × 890,143.88
4. Step 4: Simplify right side
   572,422.50x = 792,356,118,200.02
5. Step 5: Solve for x
   x = 792,356,118,200.02/572,422.50
6. Step 6: Final answer
   x = 1,384,215.54