Finding the Third Proportional to 2,138,688 and 4,598,784

Step by Step Solution

1. Step 1: Write the proportion equation
   2,138,688 : 4,598,784 = 4,598,784 : x
2. Step 2: Convert to fraction form
   2,138,688/4,598,784 = 4,598,784/x
3. Step 3: Cross multiply
   2,138,688x = 4,598,784 × 4,598,784
4. Step 4: Simplify right side
   2,138,688x = 21,148,814,278,656
5. Step 5: Solve for x
   x = 21,148,814,278,656/2,138,688
6. Step 6: Final answer
   x = 9,888,686.09