Finding the Third Proportional to 10,402,422 and 13,802,902.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,402,422 : 13,802,902.50 = 13,802,902.50 : x
2. Step 2: Convert to fraction form
   10,402,422/13,802,902.50 = 13,802,902.50/x
3. Step 3: Cross multiply
   10,402,422x = 13,802,902.50 × 13,802,902.50
4. Step 4: Simplify right side
   10,402,422x = 190,520,117,424,506.25
5. Step 5: Solve for x
   x = 190,520,117,424,506.25/10,402,422
6. Step 6: Final answer
   x = 18,314,976.78