Finding the Third Proportional to 42,246,644 and 90,556,488

Step by Step Solution

1. Step 1: Write the proportion equation
   42,246,644 : 90,556,488 = 90,556,488 : x
2. Step 2: Convert to fraction form
   42,246,644/90,556,488 = 90,556,488/x
3. Step 3: Cross multiply
   42,246,644x = 90,556,488 × 90,556,488
4. Step 4: Simplify right side
   42,246,644x = 8,200,477,518,894,144
5. Step 5: Solve for x
   x = 8,200,477,518,894,144/42,246,644
6. Step 6: Final answer
   x = 194,109,560.96