Finding the Third Proportional to 6,870,321 and 10,466,662.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,870,321 : 10,466,662.50 = 10,466,662.50 : x
2. Step 2: Convert to fraction form
   6,870,321/10,466,662.50 = 10,466,662.50/x
3. Step 3: Cross multiply
   6,870,321x = 10,466,662.50 × 10,466,662.50
4. Step 4: Simplify right side
   6,870,321x = 109,551,023,888,906.25
5. Step 5: Solve for x
   x = 109,551,023,888,906.25/6,870,321
6. Step 6: Final answer
   x = 15,945,546.63