Finding the Third Proportional to 447,604 and 915,890

Step by Step Solution

1. Step 1: Write the proportion equation
   447,604 : 915,890 = 915,890 : x
2. Step 2: Convert to fraction form
   447,604/915,890 = 915,890/x
3. Step 3: Cross multiply
   447,604x = 915,890 × 915,890
4. Step 4: Simplify right side
   447,604x = 838,854,492,100
5. Step 5: Solve for x
   x = 838,854,492,100/447,604
6. Step 6: Final answer
   x = 1,874,099.63