Finding the Third Proportional to 236,739 and 318,961.50

Step by Step Solution

1. Step 1: Write the proportion equation
   236,739 : 318,961.50 = 318,961.50 : x
2. Step 2: Convert to fraction form
   236,739/318,961.50 = 318,961.50/x
3. Step 3: Cross multiply
   236,739x = 318,961.50 × 318,961.50
4. Step 4: Simplify right side
   236,739x = 101,736,438,482.25
5. Step 5: Solve for x
   x = 101,736,438,482.25/236,739
6. Step 6: Final answer
   x = 429,740.93