Finding the Third Proportional to 208,648.50 and 434,946

Step by Step Solution

1. Step 1: Write the proportion equation
   208,648.50 : 434,946 = 434,946 : x
2. Step 2: Convert to fraction form
   208,648.50/434,946 = 434,946/x
3. Step 3: Cross multiply
   208,648.50x = 434,946 × 434,946
4. Step 4: Simplify right side
   208,648.50x = 189,178,022,916
5. Step 5: Solve for x
   x = 189,178,022,916/208,648.50
6. Step 6: Final answer
   x = 906,682.88