Finding the Third Proportional to 39,878 and 58,087.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,878 : 58,087.50 = 58,087.50 : x
2. Step 2: Convert to fraction form
   39,878/58,087.50 = 58,087.50/x
3. Step 3: Cross multiply
   39,878x = 58,087.50 × 58,087.50
4. Step 4: Simplify right side
   39,878x = 3,374,157,656.25
5. Step 5: Solve for x
   x = 3,374,157,656.25/39,878
6. Step 6: Final answer
   x = 84,612.01