Finding the Third Proportional to 57,789 and 91,696.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,789 : 91,696.50 = 91,696.50 : x
2. Step 2: Convert to fraction form
   57,789/91,696.50 = 91,696.50/x
3. Step 3: Cross multiply
   57,789x = 91,696.50 × 91,696.50
4. Step 4: Simplify right side
   57,789x = 8,408,248,112.25
5. Step 5: Solve for x
   x = 8,408,248,112.25/57,789
6. Step 6: Final answer
   x = 145,499.11