Finding the Third Proportional to 139,644 and 207,522

Step by Step Solution

1. Step 1: Write the proportion equation
   139,644 : 207,522 = 207,522 : x
2. Step 2: Convert to fraction form
   139,644/207,522 = 207,522/x
3. Step 3: Cross multiply
   139,644x = 207,522 × 207,522
4. Step 4: Simplify right side
   139,644x = 43,065,380,484
5. Step 5: Solve for x
   x = 43,065,380,484/139,644
6. Step 6: Final answer
   x = 308,394.06