Finding the Third Proportional to 72,620 and 151,891

Step by Step Solution

1. Step 1: Write the proportion equation
   72,620 : 151,891 = 151,891 : x
2. Step 2: Convert to fraction form
   72,620/151,891 = 151,891/x
3. Step 3: Cross multiply
   72,620x = 151,891 × 151,891
4. Step 4: Simplify right side
   72,620x = 23,070,875,881
5. Step 5: Solve for x
   x = 23,070,875,881/72,620
6. Step 6: Final answer
   x = 317,693.14