Finding the Third Proportional to 19,902,523 and 42,571,668

Step by Step Solution

1. Step 1: Write the proportion equation
   19,902,523 : 42,571,668 = 42,571,668 : x
2. Step 2: Convert to fraction form
   19,902,523/42,571,668 = 42,571,668/x
3. Step 3: Cross multiply
   19,902,523x = 42,571,668 × 42,571,668
4. Step 4: Simplify right side
   19,902,523x = 1,812,346,916,302,224
5. Step 5: Solve for x
   x = 1,812,346,916,302,224/19,902,523
6. Step 6: Final answer
   x = 91,061,164.27