Finding the Third Proportional to 864,279 and 1,308,343.50

Step by Step Solution

1. Step 1: Write the proportion equation
   864,279 : 1,308,343.50 = 1,308,343.50 : x
2. Step 2: Convert to fraction form
   864,279/1,308,343.50 = 1,308,343.50/x
3. Step 3: Cross multiply
   864,279x = 1,308,343.50 × 1,308,343.50
4. Step 4: Simplify right side
   864,279x = 1,711,762,713,992.25
5. Step 5: Solve for x
   x = 1,711,762,713,992.25/864,279
6. Step 6: Final answer
   x = 1,980,567.29