Finding the Third Proportional to 19,980 and 31,366.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,980 : 31,366.50 = 31,366.50 : x
2. Step 2: Convert to fraction form
   19,980/31,366.50 = 31,366.50/x
3. Step 3: Cross multiply
   19,980x = 31,366.50 × 31,366.50
4. Step 4: Simplify right side
   19,980x = 983,857,322.25
5. Step 5: Solve for x
   x = 983,857,322.25/19,980
6. Step 6: Final answer
   x = 49,242.11