Finding the Third Proportional to 136,435 and 279,632

Step by Step Solution

1. Step 1: Write the proportion equation
   136,435 : 279,632 = 279,632 : x
2. Step 2: Convert to fraction form
   136,435/279,632 = 279,632/x
3. Step 3: Cross multiply
   136,435x = 279,632 × 279,632
4. Step 4: Simplify right side
   136,435x = 78,194,055,424
5. Step 5: Solve for x
   x = 78,194,055,424/136,435
6. Step 6: Final answer
   x = 573,123.14