Finding the Third Proportional to 2,138,421 and 2,826,607.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,138,421 : 2,826,607.50 = 2,826,607.50 : x
2. Step 2: Convert to fraction form
   2,138,421/2,826,607.50 = 2,826,607.50/x
3. Step 3: Cross multiply
   2,138,421x = 2,826,607.50 × 2,826,607.50
4. Step 4: Simplify right side
   2,138,421x = 7,989,709,959,056.25
5. Step 5: Solve for x
   x = 7,989,709,959,056.25/2,138,421
6. Step 6: Final answer
   x = 3,736,266.13