Finding the Third Proportional to 915,160 and 1,391,397

Step by Step Solution

1. Step 1: Write the proportion equation
   915,160 : 1,391,397 = 1,391,397 : x
2. Step 2: Convert to fraction form
   915,160/1,391,397 = 1,391,397/x
3. Step 3: Cross multiply
   915,160x = 1,391,397 × 1,391,397
4. Step 4: Simplify right side
   915,160x = 1,935,985,611,609
5. Step 5: Solve for x
   x = 1,935,985,611,609/915,160
6. Step 6: Final answer
   x = 2,115,461.35