Finding the Third Proportional to 646,710 and 869,998.50

Step by Step Solution

1. Step 1: Write the proportion equation
   646,710 : 869,998.50 = 869,998.50 : x
2. Step 2: Convert to fraction form
   646,710/869,998.50 = 869,998.50/x
3. Step 3: Cross multiply
   646,710x = 869,998.50 × 869,998.50
4. Step 4: Simplify right side
   646,710x = 756,897,390,002.25
5. Step 5: Solve for x
   x = 756,897,390,002.25/646,710
6. Step 6: Final answer
   x = 1,170,381.45