Finding the Third Proportional to 709,018 and 1,071,968.50

Step by Step Solution

1. Step 1: Write the proportion equation
   709,018 : 1,071,968.50 = 1,071,968.50 : x
2. Step 2: Convert to fraction form
   709,018/1,071,968.50 = 1,071,968.50/x
3. Step 3: Cross multiply
   709,018x = 1,071,968.50 × 1,071,968.50
4. Step 4: Simplify right side
   709,018x = 1,149,116,464,992.25
5. Step 5: Solve for x
   x = 1,149,116,464,992.25/709,018
6. Step 6: Final answer
   x = 1,620,715.50