Finding the Third Proportional to 148,734 and 309,774

Step by Step Solution

1. Step 1: Write the proportion equation
   148,734 : 309,774 = 309,774 : x
2. Step 2: Convert to fraction form
   148,734/309,774 = 309,774/x
3. Step 3: Cross multiply
   148,734x = 309,774 × 309,774
4. Step 4: Simplify right side
   148,734x = 95,959,931,076
5. Step 5: Solve for x
   x = 95,959,931,076/148,734
6. Step 6: Final answer
   x = 645,178.18