Finding the Third Proportional to 70,908 and 109,780.50

Step by Step Solution

1. Step 1: Write the proportion equation
   70,908 : 109,780.50 = 109,780.50 : x
2. Step 2: Convert to fraction form
   70,908/109,780.50 = 109,780.50/x
3. Step 3: Cross multiply
   70,908x = 109,780.50 × 109,780.50
4. Step 4: Simplify right side
   70,908x = 12,051,758,180.25
5. Step 5: Solve for x
   x = 12,051,758,180.25/70,908
6. Step 6: Final answer
   x = 169,963.31