Finding the Third Proportional to 13,563 and 31,687.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,563 : 31,687.50 = 31,687.50 : x
2. Step 2: Convert to fraction form
   13,563/31,687.50 = 31,687.50/x
3. Step 3: Cross multiply
   13,563x = 31,687.50 × 31,687.50
4. Step 4: Simplify right side
   13,563x = 1,004,097,656.25
5. Step 5: Solve for x
   x = 1,004,097,656.25/13,563
6. Step 6: Final answer
   x = 74,032.12