Finding the Third Proportional to 19,445,630 and 42,390,268

Step by Step Solution

1. Step 1: Write the proportion equation
   19,445,630 : 42,390,268 = 42,390,268 : x
2. Step 2: Convert to fraction form
   19,445,630/42,390,268 = 42,390,268/x
3. Step 3: Cross multiply
   19,445,630x = 42,390,268 × 42,390,268
4. Step 4: Simplify right side
   19,445,630x = 1,796,934,821,111,824
5. Step 5: Solve for x
   x = 1,796,934,821,111,824/19,445,630
6. Step 6: Final answer
   x = 92,408,156.54