Finding the Third Proportional to 20,603,358 and 42,902,203.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,603,358 : 42,902,203.50 = 42,902,203.50 : x
2. Step 2: Convert to fraction form
   20,603,358/42,902,203.50 = 42,902,203.50/x
3. Step 3: Cross multiply
   20,603,358x = 42,902,203.50 × 42,902,203.50
4. Step 4: Simplify right side
   20,603,358x = 1,840,599,065,155,412.25
5. Step 5: Solve for x
   x = 1,840,599,065,155,412.25/20,603,358
6. Step 6: Final answer
   x = 89,334,906.73