Finding the Third Proportional to 127,540.50 and 278,043

Step by Step Solution

1. Step 1: Write the proportion equation
   127,540.50 : 278,043 = 278,043 : x
2. Step 2: Convert to fraction form
   127,540.50/278,043 = 278,043/x
3. Step 3: Cross multiply
   127,540.50x = 278,043 × 278,043
4. Step 4: Simplify right side
   127,540.50x = 77,307,909,849
5. Step 5: Solve for x
   x = 77,307,909,849/127,540.50
6. Step 6: Final answer
   x = 606,144.01