Finding the Third Proportional to 19,905,021,084 and 42,764,045,520

Step by Step Solution

1. Step 1: Write the proportion equation
   19,905,021,084 : 42,764,045,520 = 42,764,045,520 : x
2. Step 2: Convert to fraction form
   19,905,021,084/42,764,045,520 = 42,764,045,520/x
3. Step 3: Cross multiply
   19,905,021,084x = 42,764,045,520 × 42,764,045,520
4. Step 4: Simplify right side
   19,905,021,084x = 1,828,763,589,236,632,059,904
5. Step 5: Solve for x
   x = 1,828,763,589,236,632,059,904/19,905,021,084
6. Step 6: Final answer
   x = 91,874,486,418.23