Finding the Third Proportional to 200,860 and 432,820

Step by Step Solution

1. Step 1: Write the proportion equation
   200,860 : 432,820 = 432,820 : x
2. Step 2: Convert to fraction form
   200,860/432,820 = 432,820/x
3. Step 3: Cross multiply
   200,860x = 432,820 × 432,820
4. Step 4: Simplify right side
   200,860x = 187,333,152,400
5. Step 5: Solve for x
   x = 187,333,152,400/200,860
6. Step 6: Final answer
   x = 932,655.34