Finding the Third Proportional to 498,619.50 and 747,742.50

Step by Step Solution

1. Step 1: Write the proportion equation
   498,619.50 : 747,742.50 = 747,742.50 : x
2. Step 2: Convert to fraction form
   498,619.50/747,742.50 = 747,742.50/x
3. Step 3: Cross multiply
   498,619.50x = 747,742.50 × 747,742.50
4. Step 4: Simplify right side
   498,619.50x = 559,118,846,306.25
5. Step 5: Solve for x
   x = 559,118,846,306.25/498,619.50
6. Step 6: Final answer
   x = 1,121,333.69