Finding the Third Proportional to 3,658,861 and 5,357,071.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,658,861 : 5,357,071.50 = 5,357,071.50 : x
2. Step 2: Convert to fraction form
   3,658,861/5,357,071.50 = 5,357,071.50/x
3. Step 3: Cross multiply
   3,658,861x = 5,357,071.50 × 5,357,071.50
4. Step 4: Simplify right side
   3,658,861x = 28,698,215,056,112.25
5. Step 5: Solve for x
   x = 28,698,215,056,112.25/3,658,861
6. Step 6: Final answer
   x = 7,843,483.27