Finding the Third Proportional to 19,972.50 and 42,861

Step by Step Solution

1. Step 1: Write the proportion equation
   19,972.50 : 42,861 = 42,861 : x
2. Step 2: Convert to fraction form
   19,972.50/42,861 = 42,861/x
3. Step 3: Cross multiply
   19,972.50x = 42,861 × 42,861
4. Step 4: Simplify right side
   19,972.50x = 1,837,065,321
5. Step 5: Solve for x
   x = 1,837,065,321/19,972.50
6. Step 6: Final answer
   x = 91,979.74