Finding the Third Proportional to 47,146.50 and 64,878.75

Step by Step Solution

1. Step 1: Write the proportion equation
   47,146.50 : 64,878.75 = 64,878.75 : x
2. Step 2: Convert to fraction form
   47,146.50/64,878.75 = 64,878.75/x
3. Step 3: Cross multiply
   47,146.50x = 64,878.75 × 64,878.75
4. Step 4: Simplify right side
   47,146.50x = 4,209,252,201.56
5. Step 5: Solve for x
   x = 4,209,252,201.56/47,146.50
6. Step 6: Final answer
   x = 89,280.27