Finding the Third Proportional to 20,551,724 and 42,803,719

Step by Step Solution

1. Step 1: Write the proportion equation
   20,551,724 : 42,803,719 = 42,803,719 : x
2. Step 2: Convert to fraction form
   20,551,724/42,803,719 = 42,803,719/x
3. Step 3: Cross multiply
   20,551,724x = 42,803,719 × 42,803,719
4. Step 4: Simplify right side
   20,551,724x = 1,832,158,360,230,961
5. Step 5: Solve for x
   x = 1,832,158,360,230,961/20,551,724
6. Step 6: Final answer
   x = 89,148,645.64