Finding the Third Proportional to 42,637 and 59,639

Step by Step Solution

1. Step 1: Write the proportion equation
   42,637 : 59,639 = 59,639 : x
2. Step 2: Convert to fraction form
   42,637/59,639 = 59,639/x
3. Step 3: Cross multiply
   42,637x = 59,639 × 59,639
4. Step 4: Simplify right side
   42,637x = 3,556,810,321
5. Step 5: Solve for x
   x = 3,556,810,321/42,637
6. Step 6: Final answer
   x = 83,420.75