Finding the Third Proportional to 136,116 and 279,144

Step by Step Solution

1. Step 1: Write the proportion equation
   136,116 : 279,144 = 279,144 : x
2. Step 2: Convert to fraction form
   136,116/279,144 = 279,144/x
3. Step 3: Cross multiply
   136,116x = 279,144 × 279,144
4. Step 4: Simplify right side
   136,116x = 77,921,372,736
5. Step 5: Solve for x
   x = 77,921,372,736/136,116
6. Step 6: Final answer
   x = 572,462.99