Finding the Third Proportional to 140,310 and 298,147.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,310 : 298,147.50 = 298,147.50 : x
2. Step 2: Convert to fraction form
   140,310/298,147.50 = 298,147.50/x
3. Step 3: Cross multiply
   140,310x = 298,147.50 × 298,147.50
4. Step 4: Simplify right side
   140,310x = 88,891,931,756.25
5. Step 5: Solve for x
   x = 88,891,931,756.25/140,310
6. Step 6: Final answer
   x = 633,539.53