Finding the Third Proportional to 61,290 and 130,140

Step by Step Solution

1. Step 1: Write the proportion equation
   61,290 : 130,140 = 130,140 : x
2. Step 2: Convert to fraction form
   61,290/130,140 = 130,140/x
3. Step 3: Cross multiply
   61,290x = 130,140 × 130,140
4. Step 4: Simplify right side
   61,290x = 16,936,419,600
5. Step 5: Solve for x
   x = 16,936,419,600/61,290
6. Step 6: Final answer
   x = 276,332.51