Finding the Third Proportional to 747,726 and 1,621,648.50

Step by Step Solution

1. Step 1: Write the proportion equation
   747,726 : 1,621,648.50 = 1,621,648.50 : x
2. Step 2: Convert to fraction form
   747,726/1,621,648.50 = 1,621,648.50/x
3. Step 3: Cross multiply
   747,726x = 1,621,648.50 × 1,621,648.50
4. Step 4: Simplify right side
   747,726x = 2,629,743,857,552.25
5. Step 5: Solve for x
   x = 2,629,743,857,552.25/747,726
6. Step 6: Final answer
   x = 3,516,988.65