Finding the Third Proportional to 189,297 and 404,857.50

Step by Step Solution

1. Step 1: Write the proportion equation
   189,297 : 404,857.50 = 404,857.50 : x
2. Step 2: Convert to fraction form
   189,297/404,857.50 = 404,857.50/x
3. Step 3: Cross multiply
   189,297x = 404,857.50 × 404,857.50
4. Step 4: Simplify right side
   189,297x = 163,909,595,306.25
5. Step 5: Solve for x
   x = 163,909,595,306.25/189,297
6. Step 6: Final answer
   x = 865,885.86