Finding the Third Proportional to 4,623,871 and 9,929,506

Step by Step Solution

1. Step 1: Write the proportion equation
   4,623,871 : 9,929,506 = 9,929,506 : x
2. Step 2: Convert to fraction form
   4,623,871/9,929,506 = 9,929,506/x
3. Step 3: Cross multiply
   4,623,871x = 9,929,506 × 9,929,506
4. Step 4: Simplify right side
   4,623,871x = 98,595,089,404,036
5. Step 5: Solve for x
   x = 98,595,089,404,036/4,623,871
6. Step 6: Final answer
   x = 21,323,062.30