Finding the Third Proportional to 199,642.50 and 432,486

Step by Step Solution

1. Step 1: Write the proportion equation
   199,642.50 : 432,486 = 432,486 : x
2. Step 2: Convert to fraction form
   199,642.50/432,486 = 432,486/x
3. Step 3: Cross multiply
   199,642.50x = 432,486 × 432,486
4. Step 4: Simplify right side
   199,642.50x = 187,044,140,196
5. Step 5: Solve for x
   x = 187,044,140,196/199,642.50
6. Step 6: Final answer
   x = 936,895.40