Finding the Third Proportional to 490,431 and 749,902.50

Step by Step Solution

1. Step 1: Write the proportion equation
   490,431 : 749,902.50 = 749,902.50 : x
2. Step 2: Convert to fraction form
   490,431/749,902.50 = 749,902.50/x
3. Step 3: Cross multiply
   490,431x = 749,902.50 × 749,902.50
4. Step 4: Simplify right side
   490,431x = 562,353,759,506.25
5. Step 5: Solve for x
   x = 562,353,759,506.25/490,431
6. Step 6: Final answer
   x = 1,146,652.15