Finding the Third Proportional to 148,320 and 307,155

Step by Step Solution

1. Step 1: Write the proportion equation
   148,320 : 307,155 = 307,155 : x
2. Step 2: Convert to fraction form
   148,320/307,155 = 307,155/x
3. Step 3: Cross multiply
   148,320x = 307,155 × 307,155
4. Step 4: Simplify right side
   148,320x = 94,344,194,025
5. Step 5: Solve for x
   x = 94,344,194,025/148,320
6. Step 6: Final answer
   x = 636,085.45