Finding the Third Proportional to 39,258 and 56,072.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,258 : 56,072.50 = 56,072.50 : x
2. Step 2: Convert to fraction form
   39,258/56,072.50 = 56,072.50/x
3. Step 3: Cross multiply
   39,258x = 56,072.50 × 56,072.50
4. Step 4: Simplify right side
   39,258x = 3,144,125,256.25
5. Step 5: Solve for x
   x = 3,144,125,256.25/39,258
6. Step 6: Final answer
   x = 80,088.78