Finding the Third Proportional to 53,604 and 78,799

Step by Step Solution

1. Step 1: Write the proportion equation
   53,604 : 78,799 = 78,799 : x
2. Step 2: Convert to fraction form
   53,604/78,799 = 78,799/x
3. Step 3: Cross multiply
   53,604x = 78,799 × 78,799
4. Step 4: Simplify right side
   53,604x = 6,209,282,401
5. Step 5: Solve for x
   x = 6,209,282,401/53,604
6. Step 6: Final answer
   x = 115,836.18