Finding the Third Proportional to 59,300 and 90,172

Step by Step Solution

1. Step 1: Write the proportion equation
   59,300 : 90,172 = 90,172 : x
2. Step 2: Convert to fraction form
   59,300/90,172 = 90,172/x
3. Step 3: Cross multiply
   59,300x = 90,172 × 90,172
4. Step 4: Simplify right side
   59,300x = 8,130,989,584
5. Step 5: Solve for x
   x = 8,130,989,584/59,300
6. Step 6: Final answer
   x = 137,116.18