Finding the Third Proportional to 28,726.50 and 42,917

Step by Step Solution

1. Step 1: Write the proportion equation
   28,726.50 : 42,917 = 42,917 : x
2. Step 2: Convert to fraction form
   28,726.50/42,917 = 42,917/x
3. Step 3: Cross multiply
   28,726.50x = 42,917 × 42,917
4. Step 4: Simplify right side
   28,726.50x = 1,841,868,889
5. Step 5: Solve for x
   x = 1,841,868,889/28,726.50
6. Step 6: Final answer
   x = 64,117.41