Finding the Third Proportional to 19,536,824 and 28,719,870

Step by Step Solution

1. Step 1: Write the proportion equation
   19,536,824 : 28,719,870 = 28,719,870 : x
2. Step 2: Convert to fraction form
   19,536,824/28,719,870 = 28,719,870/x
3. Step 3: Cross multiply
   19,536,824x = 28,719,870 × 28,719,870
4. Step 4: Simplify right side
   19,536,824x = 824,830,932,816,900
5. Step 5: Solve for x
   x = 824,830,932,816,900/19,536,824
6. Step 6: Final answer
   x = 42,219,294.85