Finding the Third Proportional to 307,499.75 and 675,536.50

Step by Step Solution

1. Step 1: Write the proportion equation
   307,499.75 : 675,536.50 = 675,536.50 : x
2. Step 2: Convert to fraction form
   307,499.75/675,536.50 = 675,536.50/x
3. Step 3: Cross multiply
   307,499.75x = 675,536.50 × 675,536.50
4. Step 4: Simplify right side
   307,499.75x = 456,349,562,832.25
5. Step 5: Solve for x
   x = 456,349,562,832.25/307,499.75
6. Step 6: Final answer
   x = 1,484,064.83