Finding the Third Proportional to 353,384 and 547,788

Step by Step Solution

1. Step 1: Write the proportion equation
   353,384 : 547,788 = 547,788 : x
2. Step 2: Convert to fraction form
   353,384/547,788 = 547,788/x
3. Step 3: Cross multiply
   353,384x = 547,788 × 547,788
4. Step 4: Simplify right side
   353,384x = 300,071,692,944
5. Step 5: Solve for x
   x = 300,071,692,944/353,384
6. Step 6: Final answer
   x = 849,137.75