Finding the Third Proportional to 140,312 and 307,788

Step by Step Solution

1. Step 1: Write the proportion equation
   140,312 : 307,788 = 307,788 : x
2. Step 2: Convert to fraction form
   140,312/307,788 = 307,788/x
3. Step 3: Cross multiply
   140,312x = 307,788 × 307,788
4. Step 4: Simplify right side
   140,312x = 94,733,452,944
5. Step 5: Solve for x
   x = 94,733,452,944/140,312
6. Step 6: Final answer
   x = 675,162.87