Finding the Third Proportional to 196,159 and 415,857.50

Step by Step Solution

1. Step 1: Write the proportion equation
   196,159 : 415,857.50 = 415,857.50 : x
2. Step 2: Convert to fraction form
   196,159/415,857.50 = 415,857.50/x
3. Step 3: Cross multiply
   196,159x = 415,857.50 × 415,857.50
4. Step 4: Simplify right side
   196,159x = 172,937,460,306.25
5. Step 5: Solve for x
   x = 172,937,460,306.25/196,159
6. Step 6: Final answer
   x = 881,618.79