Finding the Third Proportional to 67,870 and 147,788

Step by Step Solution

1. Step 1: Write the proportion equation
   67,870 : 147,788 = 147,788 : x
2. Step 2: Convert to fraction form
   67,870/147,788 = 147,788/x
3. Step 3: Cross multiply
   67,870x = 147,788 × 147,788
4. Step 4: Simplify right side
   67,870x = 21,841,292,944
5. Step 5: Solve for x
   x = 21,841,292,944/67,870
6. Step 6: Final answer
   x = 321,810.71