Finding the Third Proportional to 31,216.50 and 45,726

Step by Step Solution

1. Step 1: Write the proportion equation
   31,216.50 : 45,726 = 45,726 : x
2. Step 2: Convert to fraction form
   31,216.50/45,726 = 45,726/x
3. Step 3: Cross multiply
   31,216.50x = 45,726 × 45,726
4. Step 4: Simplify right side
   31,216.50x = 2,090,867,076
5. Step 5: Solve for x
   x = 2,090,867,076/31,216.50
6. Step 6: Final answer
   x = 66,979.55