Finding the Third Proportional to 70,839 and 99,166.50

Step by Step Solution

1. Step 1: Write the proportion equation
   70,839 : 99,166.50 = 99,166.50 : x
2. Step 2: Convert to fraction form
   70,839/99,166.50 = 99,166.50/x
3. Step 3: Cross multiply
   70,839x = 99,166.50 × 99,166.50
4. Step 4: Simplify right side
   70,839x = 9,833,994,722.25
5. Step 5: Solve for x
   x = 9,833,994,722.25/70,839
6. Step 6: Final answer
   x = 138,821.76