Finding the Third Proportional to 4,492,090 and 9,771,240

Step by Step Solution

1. Step 1: Write the proportion equation
   4,492,090 : 9,771,240 = 9,771,240 : x
2. Step 2: Convert to fraction form
   4,492,090/9,771,240 = 9,771,240/x
3. Step 3: Cross multiply
   4,492,090x = 9,771,240 × 9,771,240
4. Step 4: Simplify right side
   4,492,090x = 95,477,131,137,600
5. Step 5: Solve for x
   x = 95,477,131,137,600/4,492,090
6. Step 6: Final answer
   x = 21,254,500.94