Finding the Third Proportional to 31,617 and 64,327.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,617 : 64,327.50 = 64,327.50 : x
2. Step 2: Convert to fraction form
   31,617/64,327.50 = 64,327.50/x
3. Step 3: Cross multiply
   31,617x = 64,327.50 × 64,327.50
4. Step 4: Simplify right side
   31,617x = 4,138,027,256.25
5. Step 5: Solve for x
   x = 4,138,027,256.25/31,617
6. Step 6: Final answer
   x = 130,879.82