Finding the Third Proportional to 199,763.50 and 429,172

Step by Step Solution

1. Step 1: Write the proportion equation
   199,763.50 : 429,172 = 429,172 : x
2. Step 2: Convert to fraction form
   199,763.50/429,172 = 429,172/x
3. Step 3: Cross multiply
   199,763.50x = 429,172 × 429,172
4. Step 4: Simplify right side
   199,763.50x = 184,188,605,584
5. Step 5: Solve for x
   x = 184,188,605,584/199,763.50
6. Step 6: Final answer
   x = 922,033.33