Finding the Third Proportional to 3,489,378 and 5,213,152

Step by Step Solution

1. Step 1: Write the proportion equation
   3,489,378 : 5,213,152 = 5,213,152 : x
2. Step 2: Convert to fraction form
   3,489,378/5,213,152 = 5,213,152/x
3. Step 3: Cross multiply
   3,489,378x = 5,213,152 × 5,213,152
4. Step 4: Simplify right side
   3,489,378x = 27,176,953,775,104
5. Step 5: Solve for x
   x = 27,176,953,775,104/3,489,378
6. Step 6: Final answer
   x = 7,788,480.86