Finding the Third Proportional to 171,099 and 399,799.50

Step by Step Solution

1. Step 1: Write the proportion equation
   171,099 : 399,799.50 = 399,799.50 : x
2. Step 2: Convert to fraction form
   171,099/399,799.50 = 399,799.50/x
3. Step 3: Cross multiply
   171,099x = 399,799.50 × 399,799.50
4. Step 4: Simplify right side
   171,099x = 159,839,640,200.25
5. Step 5: Solve for x
   x = 159,839,640,200.25/171,099
6. Step 6: Final answer
   x = 934,193.89