Finding the Third Proportional to 187,200 and 429,984

Step by Step Solution

1. Step 1: Write the proportion equation
   187,200 : 429,984 = 429,984 : x
2. Step 2: Convert to fraction form
   187,200/429,984 = 429,984/x
3. Step 3: Cross multiply
   187,200x = 429,984 × 429,984
4. Step 4: Simplify right side
   187,200x = 184,886,240,256
5. Step 5: Solve for x
   x = 184,886,240,256/187,200
6. Step 6: Final answer
   x = 987,640.17