Finding the Third Proportional to 67,788 and 99,240

Step by Step Solution

1. Step 1: Write the proportion equation
   67,788 : 99,240 = 99,240 : x
2. Step 2: Convert to fraction form
   67,788/99,240 = 99,240/x
3. Step 3: Cross multiply
   67,788x = 99,240 × 99,240
4. Step 4: Simplify right side
   67,788x = 9,848,577,600
5. Step 5: Solve for x
   x = 9,848,577,600/67,788
6. Step 6: Final answer
   x = 145,284.97