Finding the Third Proportional to 2,161,216 and 4,657,608

Step by Step Solution

1. Step 1: Write the proportion equation
   2,161,216 : 4,657,608 = 4,657,608 : x
2. Step 2: Convert to fraction form
   2,161,216/4,657,608 = 4,657,608/x
3. Step 3: Cross multiply
   2,161,216x = 4,657,608 × 4,657,608
4. Step 4: Simplify right side
   2,161,216x = 21,693,312,281,664
5. Step 5: Solve for x
   x = 21,693,312,281,664/2,161,216
6. Step 6: Final answer
   x = 10,037,549.36