Finding the Third Proportional to 228,912 and 348,694.50

Step by Step Solution

1. Step 1: Write the proportion equation
   228,912 : 348,694.50 = 348,694.50 : x
2. Step 2: Convert to fraction form
   228,912/348,694.50 = 348,694.50/x
3. Step 3: Cross multiply
   228,912x = 348,694.50 × 348,694.50
4. Step 4: Simplify right side
   228,912x = 121,587,854,330.25
5. Step 5: Solve for x
   x = 121,587,854,330.25/228,912
6. Step 6: Final answer
   x = 531,155.44