Finding the Third Proportional to 356,845.50 and 553,196.25

Step by Step Solution

1. Step 1: Write the proportion equation
   356,845.50 : 553,196.25 = 553,196.25 : x
2. Step 2: Convert to fraction form
   356,845.50/553,196.25 = 553,196.25/x
3. Step 3: Cross multiply
   356,845.50x = 553,196.25 × 553,196.25
4. Step 4: Simplify right side
   356,845.50x = 306,026,091,014.06
5. Step 5: Solve for x
   x = 306,026,091,014.06/356,845.50
6. Step 6: Final answer
   x = 857,587.08