Finding the Third Proportional to 27,978.75 and 60,688.75

Step by Step Solution

1. Step 1: Write the proportion equation
   27,978.75 : 60,688.75 = 60,688.75 : x
2. Step 2: Convert to fraction form
   27,978.75/60,688.75 = 60,688.75/x
3. Step 3: Cross multiply
   27,978.75x = 60,688.75 × 60,688.75
4. Step 4: Simplify right side
   27,978.75x = 3,683,124,376.56
5. Step 5: Solve for x
   x = 3,683,124,376.56/27,978.75
6. Step 6: Final answer
   x = 131,640.06