Finding the Third Proportional to 20,551,808.53 and 42,803,857.69

Step by Step Solution

1. Step 1: Write the proportion equation
   20,551,808.53 : 42,803,857.69 = 42,803,857.69 : x
2. Step 2: Convert to fraction form
   20,551,808.53/42,803,857.69 = 42,803,857.69/x
3. Step 3: Cross multiply
   20,551,808.53x = 42,803,857.69 × 42,803,857.69
4. Step 4: Simplify right side
   20,551,808.53x = 1,832,170,232,931,752.75
5. Step 5: Solve for x
   x = 1,832,170,232,931,752.75/20,551,808.53
6. Step 6: Final answer
   x = 89,148,856.66