Finding the Third Proportional to 146,648,074.50 and 318,518,856

Step by Step Solution

1. Step 1: Write the proportion equation
   146,648,074.50 : 318,518,856 = 318,518,856 : x
2. Step 2: Convert to fraction form
   146,648,074.50/318,518,856 = 318,518,856/x
3. Step 3: Cross multiply
   146,648,074.50x = 318,518,856 × 318,518,856
4. Step 4: Simplify right side
   146,648,074.50x = 101,454,261,627,548,736
5. Step 5: Solve for x
   x = 101,454,261,627,548,736/146,648,074.50
6. Step 6: Final answer
   x = 691,821,300.58