Finding the Third Proportional to 147,910 and 240,308

Step by Step Solution

1. Step 1: Write the proportion equation
   147,910 : 240,308 = 240,308 : x
2. Step 2: Convert to fraction form
   147,910/240,308 = 240,308/x
3. Step 3: Cross multiply
   147,910x = 240,308 × 240,308
4. Step 4: Simplify right side
   147,910x = 57,747,934,864
5. Step 5: Solve for x
   x = 57,747,934,864/147,910
6. Step 6: Final answer
   x = 390,426.17