Finding the Third Proportional to 490,429 and 749,899.50

Step by Step Solution

1. Step 1: Write the proportion equation
   490,429 : 749,899.50 = 749,899.50 : x
2. Step 2: Convert to fraction form
   490,429/749,899.50 = 749,899.50/x
3. Step 3: Cross multiply
   490,429x = 749,899.50 × 749,899.50
4. Step 4: Simplify right side
   490,429x = 562,349,260,100.25
5. Step 5: Solve for x
   x = 562,349,260,100.25/490,429
6. Step 6: Final answer
   x = 1,146,647.65