Finding the Third Proportional to 196,161 and 415,862.50

Step by Step Solution

1. Step 1: Write the proportion equation
   196,161 : 415,862.50 = 415,862.50 : x
2. Step 2: Convert to fraction form
   196,161/415,862.50 = 415,862.50/x
3. Step 3: Cross multiply
   196,161x = 415,862.50 × 415,862.50
4. Step 4: Simplify right side
   196,161x = 172,941,618,906.25
5. Step 5: Solve for x
   x = 172,941,618,906.25/196,161
6. Step 6: Final answer
   x = 881,631.00