Finding the Third Proportional to 39,155 and 59,280

Step by Step Solution

1. Step 1: Write the proportion equation
   39,155 : 59,280 = 59,280 : x
2. Step 2: Convert to fraction form
   39,155/59,280 = 59,280/x
3. Step 3: Cross multiply
   39,155x = 59,280 × 59,280
4. Step 4: Simplify right side
   39,155x = 3,514,118,400
5. Step 5: Solve for x
   x = 3,514,118,400/39,155
6. Step 6: Final answer
   x = 89,748.91