Finding the Third Proportional to 37,689.50 and 55,410.50

Step by Step Solution

1. Step 1: Write the proportion equation
   37,689.50 : 55,410.50 = 55,410.50 : x
2. Step 2: Convert to fraction form
   37,689.50/55,410.50 = 55,410.50/x
3. Step 3: Cross multiply
   37,689.50x = 55,410.50 × 55,410.50
4. Step 4: Simplify right side
   37,689.50x = 3,070,323,510.25
5. Step 5: Solve for x
   x = 3,070,323,510.25/37,689.50
6. Step 6: Final answer
   x = 81,463.63