Finding the Third Proportional to 127,818 and 272,038.50

Step by Step Solution

1. Step 1: Write the proportion equation
   127,818 : 272,038.50 = 272,038.50 : x
2. Step 2: Convert to fraction form
   127,818/272,038.50 = 272,038.50/x
3. Step 3: Cross multiply
   127,818x = 272,038.50 × 272,038.50
4. Step 4: Simplify right side
   127,818x = 74,004,945,482.25
5. Step 5: Solve for x
   x = 74,004,945,482.25/127,818
6. Step 6: Final answer
   x = 578,986.88