Finding the Third Proportional to 152,091 and 339,120

Step by Step Solution

1. Step 1: Write the proportion equation
   152,091 : 339,120 = 339,120 : x
2. Step 2: Convert to fraction form
   152,091/339,120 = 339,120/x
3. Step 3: Cross multiply
   152,091x = 339,120 × 339,120
4. Step 4: Simplify right side
   152,091x = 115,002,374,400
5. Step 5: Solve for x
   x = 115,002,374,400/152,091
6. Step 6: Final answer
   x = 756,141.88