Finding the Third Proportional to 55,052 and 87,490

Step by Step Solution

1. Step 1: Write the proportion equation
   55,052 : 87,490 = 87,490 : x
2. Step 2: Convert to fraction form
   55,052/87,490 = 87,490/x
3. Step 3: Cross multiply
   55,052x = 87,490 × 87,490
4. Step 4: Simplify right side
   55,052x = 7,654,500,100
5. Step 5: Solve for x
   x = 7,654,500,100/55,052
6. Step 6: Final answer
   x = 139,041.27