Finding the Third Proportional to 19,902,515 and 42,571,652

Step by Step Solution

1. Step 1: Write the proportion equation
   19,902,515 : 42,571,652 = 42,571,652 : x
2. Step 2: Convert to fraction form
   19,902,515/42,571,652 = 42,571,652/x
3. Step 3: Cross multiply
   19,902,515x = 42,571,652 × 42,571,652
4. Step 4: Simplify right side
   19,902,515x = 1,812,345,554,009,104
5. Step 5: Solve for x
   x = 1,812,345,554,009,104/19,902,515
6. Step 6: Final answer
   x = 91,061,132.43