Finding the Third Proportional to 127,314 and 279,109.50

Step by Step Solution

1. Step 1: Write the proportion equation
   127,314 : 279,109.50 = 279,109.50 : x
2. Step 2: Convert to fraction form
   127,314/279,109.50 = 279,109.50/x
3. Step 3: Cross multiply
   127,314x = 279,109.50 × 279,109.50
4. Step 4: Simplify right side
   127,314x = 77,902,112,990.25
5. Step 5: Solve for x
   x = 77,902,112,990.25/127,314
6. Step 6: Final answer
   x = 611,889.60