Finding the Third Proportional to 42,315,705 and 58,470,691.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,315,705 : 58,470,691.50 = 58,470,691.50 : x
2. Step 2: Convert to fraction form
   42,315,705/58,470,691.50 = 58,470,691.50/x
3. Step 3: Cross multiply
   42,315,705x = 58,470,691.50 × 58,470,691.50
4. Step 4: Simplify right side
   42,315,705x = 3,418,821,764,488,172
5. Step 5: Solve for x
   x = 3,418,821,764,488,172/42,315,705
6. Step 6: Final answer
   x = 80,793,212.93