Finding the Third Proportional to 639,122 and 1,017,460.50

Step by Step Solution

1. Step 1: Write the proportion equation
   639,122 : 1,017,460.50 = 1,017,460.50 : x
2. Step 2: Convert to fraction form
   639,122/1,017,460.50 = 1,017,460.50/x
3. Step 3: Cross multiply
   639,122x = 1,017,460.50 × 1,017,460.50
4. Step 4: Simplify right side
   639,122x = 1,035,225,869,060.25
5. Step 5: Solve for x
   x = 1,035,225,869,060.25/639,122
6. Step 6: Final answer
   x = 1,619,762.53