Finding the Third Proportional to 20,988 and 45,668.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,988 : 45,668.50 = 45,668.50 : x
2. Step 2: Convert to fraction form
   20,988/45,668.50 = 45,668.50/x
3. Step 3: Cross multiply
   20,988x = 45,668.50 × 45,668.50
4. Step 4: Simplify right side
   20,988x = 2,085,611,892.25
5. Step 5: Solve for x
   x = 2,085,611,892.25/20,988
6. Step 6: Final answer
   x = 99,371.64