Finding the Third Proportional to 191,061.50 and 404,880.50

Step by Step Solution

1. Step 1: Write the proportion equation
   191,061.50 : 404,880.50 = 404,880.50 : x
2. Step 2: Convert to fraction form
   191,061.50/404,880.50 = 404,880.50/x
3. Step 3: Cross multiply
   191,061.50x = 404,880.50 × 404,880.50
4. Step 4: Simplify right side
   191,061.50x = 163,928,219,280.25
5. Step 5: Solve for x
   x = 163,928,219,280.25/191,061.50
6. Step 6: Final answer
   x = 857,986.67