Finding the Third Proportional to 152,979 and 215,047

Step by Step Solution

1. Step 1: Write the proportion equation
   152,979 : 215,047 = 215,047 : x
2. Step 2: Convert to fraction form
   152,979/215,047 = 215,047/x
3. Step 3: Cross multiply
   152,979x = 215,047 × 215,047
4. Step 4: Simplify right side
   152,979x = 46,245,212,209
5. Step 5: Solve for x
   x = 46,245,212,209/152,979
6. Step 6: Final answer
   x = 302,297.78