Finding the Third Proportional to 90,744,939 and 139,481,518.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,744,939 : 139,481,518.50 = 139,481,518.50 : x
2. Step 2: Convert to fraction form
   90,744,939/139,481,518.50 = 139,481,518.50/x
3. Step 3: Cross multiply
   90,744,939x = 139,481,518.50 × 139,481,518.50
4. Step 4: Simplify right side
   90,744,939x = 19,455,094,003,065,844
5. Step 5: Solve for x
   x = 19,455,094,003,065,844/90,744,939
6. Step 6: Final answer
   x = 214,393,157.54