Finding the Third Proportional to 53,985 and 111,428

Step by Step Solution

1. Step 1: Write the proportion equation
   53,985 : 111,428 = 111,428 : x
2. Step 2: Convert to fraction form
   53,985/111,428 = 111,428/x
3. Step 3: Cross multiply
   53,985x = 111,428 × 111,428
4. Step 4: Simplify right side
   53,985x = 12,416,199,184
5. Step 5: Solve for x
   x = 12,416,199,184/53,985
6. Step 6: Final answer
   x = 229,993.50