Finding the Third Proportional to 155,506.50 and 418,908

Step by Step Solution

1. Step 1: Write the proportion equation
   155,506.50 : 418,908 = 418,908 : x
2. Step 2: Convert to fraction form
   155,506.50/418,908 = 418,908/x
3. Step 3: Cross multiply
   155,506.50x = 418,908 × 418,908
4. Step 4: Simplify right side
   155,506.50x = 175,483,912,464
5. Step 5: Solve for x
   x = 175,483,912,464/155,506.50
6. Step 6: Final answer
   x = 1,128,466.74