Finding the Third Proportional to 188,499 and 403,607

Step by Step Solution

1. Step 1: Write the proportion equation
   188,499 : 403,607 = 403,607 : x
2. Step 2: Convert to fraction form
   188,499/403,607 = 403,607/x
3. Step 3: Cross multiply
   188,499x = 403,607 × 403,607
4. Step 4: Simplify right side
   188,499x = 162,898,610,449
5. Step 5: Solve for x
   x = 162,898,610,449/188,499
6. Step 6: Final answer
   x = 864,188.19