Finding the Third Proportional to 141,628.50 and 307,908

Step by Step Solution

1. Step 1: Write the proportion equation
   141,628.50 : 307,908 = 307,908 : x
2. Step 2: Convert to fraction form
   141,628.50/307,908 = 307,908/x
3. Step 3: Cross multiply
   141,628.50x = 307,908 × 307,908
4. Step 4: Simplify right side
   141,628.50x = 94,807,336,464
5. Step 5: Solve for x
   x = 94,807,336,464/141,628.50
6. Step 6: Final answer
   x = 669,408.60