Finding the Third Proportional to 154,818 and 339,141

Step by Step Solution

1. Step 1: Write the proportion equation
   154,818 : 339,141 = 339,141 : x
2. Step 2: Convert to fraction form
   154,818/339,141 = 339,141/x
3. Step 3: Cross multiply
   154,818x = 339,141 × 339,141
4. Step 4: Simplify right side
   154,818x = 115,016,617,881
5. Step 5: Solve for x
   x = 115,016,617,881/154,818
6. Step 6: Final answer
   x = 742,915.02