Finding the Third Proportional to 19,847.21 and 42,572.46

Step by Step Solution

1. Step 1: Write the proportion equation
   19,847.21 : 42,572.46 = 42,572.46 : x
2. Step 2: Convert to fraction form
   19,847.21/42,572.46 = 42,572.46/x
3. Step 3: Cross multiply
   19,847.21x = 42,572.46 × 42,572.46
4. Step 4: Simplify right side
   19,847.21x = 1,812,414,430.27
5. Step 5: Solve for x
   x = 1,812,414,430.27/19,847.21
6. Step 6: Final answer
   x = 91,318.33