Finding the Third Proportional to 5,465,680 and 7,785,978

Step by Step Solution

1. Step 1: Write the proportion equation
   5,465,680 : 7,785,978 = 7,785,978 : x
2. Step 2: Convert to fraction form
   5,465,680/7,785,978 = 7,785,978/x
3. Step 3: Cross multiply
   5,465,680x = 7,785,978 × 7,785,978
4. Step 4: Simplify right side
   5,465,680x = 60,621,453,416,484
5. Step 5: Solve for x
   x = 60,621,453,416,484/5,465,680
6. Step 6: Final answer
   x = 11,091,292.10