Finding the Third Proportional to 830,174 and 1,215,654

Step by Step Solution

1. Step 1: Write the proportion equation
   830,174 : 1,215,654 = 1,215,654 : x
2. Step 2: Convert to fraction form
   830,174/1,215,654 = 1,215,654/x
3. Step 3: Cross multiply
   830,174x = 1,215,654 × 1,215,654
4. Step 4: Simplify right side
   830,174x = 1,477,814,647,716
5. Step 5: Solve for x
   x = 1,477,814,647,716/830,174
6. Step 6: Final answer
   x = 1,780,126.39