Finding the Third Proportional to 89,412 and 195,438

Step by Step Solution

1. Step 1: Write the proportion equation
   89,412 : 195,438 = 195,438 : x
2. Step 2: Convert to fraction form
   89,412/195,438 = 195,438/x
3. Step 3: Cross multiply
   89,412x = 195,438 × 195,438
4. Step 4: Simplify right side
   89,412x = 38,196,011,844
5. Step 5: Solve for x
   x = 38,196,011,844/89,412
6. Step 6: Final answer
   x = 427,191.11