Finding the Third Proportional to 4,978,435.50 and 7,688,749.50

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978,435.50 : 7,688,749.50 = 7,688,749.50 : x
2. Step 2: Convert to fraction form
   4,978,435.50/7,688,749.50 = 7,688,749.50/x
3. Step 3: Cross multiply
   4,978,435.50x = 7,688,749.50 × 7,688,749.50
4. Step 4: Simplify right side
   4,978,435.50x = 59,116,868,873,750.25
5. Step 5: Solve for x
   x = 59,116,868,873,750.25/4,978,435.50
6. Step 6: Final answer
   x = 11,874,587.68