Finding the Third Proportional to 27,172.50 and 59,172.75

Step by Step Solution

1. Step 1: Write the proportion equation
   27,172.50 : 59,172.75 = 59,172.75 : x
2. Step 2: Convert to fraction form
   27,172.50/59,172.75 = 59,172.75/x
3. Step 3: Cross multiply
   27,172.50x = 59,172.75 × 59,172.75
4. Step 4: Simplify right side
   27,172.50x = 3,501,414,342.56
5. Step 5: Solve for x
   x = 3,501,414,342.56/27,172.50
6. Step 6: Final answer
   x = 128,858.75