Finding the Third Proportional to 15,637.50 and 31,911.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,637.50 : 31,911.50 = 31,911.50 : x
2. Step 2: Convert to fraction form
   15,637.50/31,911.50 = 31,911.50/x
3. Step 3: Cross multiply
   15,637.50x = 31,911.50 × 31,911.50
4. Step 4: Simplify right side
   15,637.50x = 1,018,343,832.25
5. Step 5: Solve for x
   x = 1,018,343,832.25/15,637.50
6. Step 6: Final answer
   x = 65,121.91