Finding the Third Proportional to 59,990 and 91,803

Step by Step Solution

1. Step 1: Write the proportion equation
   59,990 : 91,803 = 91,803 : x
2. Step 2: Convert to fraction form
   59,990/91,803 = 91,803/x
3. Step 3: Cross multiply
   59,990x = 91,803 × 91,803
4. Step 4: Simplify right side
   59,990x = 8,427,790,809
5. Step 5: Solve for x
   x = 8,427,790,809/59,990
6. Step 6: Final answer
   x = 140,486.59