Finding the Third Proportional to 58,213 and 111,929

Step by Step Solution

1. Step 1: Write the proportion equation
   58,213 : 111,929 = 111,929 : x
2. Step 2: Convert to fraction form
   58,213/111,929 = 111,929/x
3. Step 3: Cross multiply
   58,213x = 111,929 × 111,929
4. Step 4: Simplify right side
   58,213x = 12,528,101,041
5. Step 5: Solve for x
   x = 12,528,101,041/58,213
6. Step 6: Final answer
   x = 215,211.40