Finding the Third Proportional to 146,665.69 and 306,931.78

Step by Step Solution

1. Step 1: Write the proportion equation
   146,665.69 : 306,931.78 = 306,931.78 : x
2. Step 2: Convert to fraction form
   146,665.69/306,931.78 = 306,931.78/x
3. Step 3: Cross multiply
   146,665.69x = 306,931.78 × 306,931.78
4. Step 4: Simplify right side
   146,665.69x = 94,207,118,341.30
5. Step 5: Solve for x
   x = 94,207,118,341.30/146,665.69
6. Step 6: Final answer
   x = 642,325.55