Finding the Third Proportional to 89,312 and 123,030

Step by Step Solution

1. Step 1: Write the proportion equation
   89,312 : 123,030 = 123,030 : x
2. Step 2: Convert to fraction form
   89,312/123,030 = 123,030/x
3. Step 3: Cross multiply
   89,312x = 123,030 × 123,030
4. Step 4: Simplify right side
   89,312x = 15,136,380,900
5. Step 5: Solve for x
   x = 15,136,380,900/89,312
6. Step 6: Final answer
   x = 169,477.57