Finding the Third Proportional to 5,516,964 and 8,610,790

Step by Step Solution

1. Step 1: Write the proportion equation
   5,516,964 : 8,610,790 = 8,610,790 : x
2. Step 2: Convert to fraction form
   5,516,964/8,610,790 = 8,610,790/x
3. Step 3: Cross multiply
   5,516,964x = 8,610,790 × 8,610,790
4. Step 4: Simplify right side
   5,516,964x = 74,145,704,424,100
5. Step 5: Solve for x
   x = 74,145,704,424,100/5,516,964
6. Step 6: Final answer
   x = 13,439,584.60