Finding the Third Proportional to 5,478,020 and 8,516,046

Step by Step Solution

1. Step 1: Write the proportion equation
   5,478,020 : 8,516,046 = 8,516,046 : x
2. Step 2: Convert to fraction form
   5,478,020/8,516,046 = 8,516,046/x
3. Step 3: Cross multiply
   5,478,020x = 8,516,046 × 8,516,046
4. Step 4: Simplify right side
   5,478,020x = 72,523,039,474,116
5. Step 5: Solve for x
   x = 72,523,039,474,116/5,478,020
6. Step 6: Final answer
   x = 13,238,914.69