Finding the Third Proportional to 53,968.78 and 71,385.05

Step by Step Solution

1. Step 1: Write the proportion equation
   53,968.78 : 71,385.05 = 71,385.05 : x
2. Step 2: Convert to fraction form
   53,968.78/71,385.05 = 71,385.05/x
3. Step 3: Cross multiply
   53,968.78x = 71,385.05 × 71,385.05
4. Step 4: Simplify right side
   53,968.78x = 5,095,824,917.35
5. Step 5: Solve for x
   x = 5,095,824,917.35/53,968.78
6. Step 6: Final answer
   x = 94,421.72