Finding the Third Proportional to 116,780 and 156,917

Step by Step Solution

1. Step 1: Write the proportion equation
   116,780 : 156,917 = 156,917 : x
2. Step 2: Convert to fraction form
   116,780/156,917 = 156,917/x
3. Step 3: Cross multiply
   116,780x = 156,917 × 156,917
4. Step 4: Simplify right side
   116,780x = 24,622,944,889
5. Step 5: Solve for x
   x = 24,622,944,889/116,780
6. Step 6: Final answer
   x = 210,848.99