Finding the Third Proportional to 658,590 and 1,047,321

Step by Step Solution

1. Step 1: Write the proportion equation
   658,590 : 1,047,321 = 1,047,321 : x
2. Step 2: Convert to fraction form
   658,590/1,047,321 = 1,047,321/x
3. Step 3: Cross multiply
   658,590x = 1,047,321 × 1,047,321
4. Step 4: Simplify right side
   658,590x = 1,096,881,277,041
5. Step 5: Solve for x
   x = 1,096,881,277,041/658,590
6. Step 6: Final answer
   x = 1,665,499.44