Finding the Third Proportional to 311,877 and 482,719.50

Step by Step Solution

1. Step 1: Write the proportion equation
   311,877 : 482,719.50 = 482,719.50 : x
2. Step 2: Convert to fraction form
   311,877/482,719.50 = 482,719.50/x
3. Step 3: Cross multiply
   311,877x = 482,719.50 × 482,719.50
4. Step 4: Simplify right side
   311,877x = 233,018,115,680.25
5. Step 5: Solve for x
   x = 233,018,115,680.25/311,877
6. Step 6: Final answer
   x = 747,147.48