Finding the Third Proportional to 140,418 and 307,074

Step by Step Solution

1. Step 1: Write the proportion equation
   140,418 : 307,074 = 307,074 : x
2. Step 2: Convert to fraction form
   140,418/307,074 = 307,074/x
3. Step 3: Cross multiply
   140,418x = 307,074 × 307,074
4. Step 4: Simplify right side
   140,418x = 94,294,441,476
5. Step 5: Solve for x
   x = 94,294,441,476/140,418
6. Step 6: Final answer
   x = 671,526.74