Finding the Third Proportional to 458,749 and 674,587.50

Step by Step Solution

1. Step 1: Write the proportion equation
   458,749 : 674,587.50 = 674,587.50 : x
2. Step 2: Convert to fraction form
   458,749/674,587.50 = 674,587.50/x
3. Step 3: Cross multiply
   458,749x = 674,587.50 × 674,587.50
4. Step 4: Simplify right side
   458,749x = 455,068,295,156.25
5. Step 5: Solve for x
   x = 455,068,295,156.25/458,749
6. Step 6: Final answer
   x = 991,976.65