Finding the Third Proportional to 3,851,898 and 9,109,312.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,851,898 : 9,109,312.50 = 9,109,312.50 : x
2. Step 2: Convert to fraction form
   3,851,898/9,109,312.50 = 9,109,312.50/x
3. Step 3: Cross multiply
   3,851,898x = 9,109,312.50 × 9,109,312.50
4. Step 4: Simplify right side
   3,851,898x = 82,979,574,222,656.25
5. Step 5: Solve for x
   x = 82,979,574,222,656.25/3,851,898
6. Step 6: Final answer
   x = 21,542,515.98