Finding the Third Proportional to 2,154,903.50 and 4,688,148.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,154,903.50 : 4,688,148.50 = 4,688,148.50 : x
2. Step 2: Convert to fraction form
   2,154,903.50/4,688,148.50 = 4,688,148.50/x
3. Step 3: Cross multiply
   2,154,903.50x = 4,688,148.50 × 4,688,148.50
4. Step 4: Simplify right side
   2,154,903.50x = 21,978,736,358,052.25
5. Step 5: Solve for x
   x = 21,978,736,358,052.25/2,154,903.50
6. Step 6: Final answer
   x = 10,199,406.31