Finding the Third Proportional to 134,142.75 and 279,301.50

Step by Step Solution

1. Step 1: Write the proportion equation
   134,142.75 : 279,301.50 = 279,301.50 : x
2. Step 2: Convert to fraction form
   134,142.75/279,301.50 = 279,301.50/x
3. Step 3: Cross multiply
   134,142.75x = 279,301.50 × 279,301.50
4. Step 4: Simplify right side
   134,142.75x = 78,009,327,902.25
5. Step 5: Solve for x
   x = 78,009,327,902.25/134,142.75
6. Step 6: Final answer
   x = 581,539.65