Finding the Third Proportional to 2,116,780 and 4,573,090

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116,780 : 4,573,090 = 4,573,090 : x
2. Step 2: Convert to fraction form
   2,116,780/4,573,090 = 4,573,090/x
3. Step 3: Cross multiply
   2,116,780x = 4,573,090 × 4,573,090
4. Step 4: Simplify right side
   2,116,780x = 20,913,152,148,100
5. Step 5: Solve for x
   x = 20,913,152,148,100/2,116,780
6. Step 6: Final answer
   x = 9,879,700.37