Finding the Third Proportional to 127,490 and 280,146

Step by Step Solution

1. Step 1: Write the proportion equation
   127,490 : 280,146 = 280,146 : x
2. Step 2: Convert to fraction form
   127,490/280,146 = 280,146/x
3. Step 3: Cross multiply
   127,490x = 280,146 × 280,146
4. Step 4: Simplify right side
   127,490x = 78,481,781,316
5. Step 5: Solve for x
   x = 78,481,781,316/127,490
6. Step 6: Final answer
   x = 615,591.66