Finding the Third Proportional to 696,570 and 1,422,664.50

Step by Step Solution

1. Step 1: Write the proportion equation
   696,570 : 1,422,664.50 = 1,422,664.50 : x
2. Step 2: Convert to fraction form
   696,570/1,422,664.50 = 1,422,664.50/x
3. Step 3: Cross multiply
   696,570x = 1,422,664.50 × 1,422,664.50
4. Step 4: Simplify right side
   696,570x = 2,023,974,279,560.25
5. Step 5: Solve for x
   x = 2,023,974,279,560.25/696,570
6. Step 6: Final answer
   x = 2,905,629.41