Finding the Third Proportional to 9,988,516 and 21,492,988

Step by Step Solution

1. Step 1: Write the proportion equation
   9,988,516 : 21,492,988 = 21,492,988 : x
2. Step 2: Convert to fraction form
   9,988,516/21,492,988 = 21,492,988/x
3. Step 3: Cross multiply
   9,988,516x = 21,492,988 × 21,492,988
4. Step 4: Simplify right side
   9,988,516x = 461,948,533,168,144
5. Step 5: Solve for x
   x = 461,948,533,168,144/9,988,516
6. Step 6: Final answer
   x = 46,247,964.48