Finding the Third Proportional to 128,501,302.50 and 193,036,810.50

Step by Step Solution

1. Step 1: Write the proportion equation
   128,501,302.50 : 193,036,810.50 = 193,036,810.50 : x
2. Step 2: Convert to fraction form
   128,501,302.50/193,036,810.50 = 193,036,810.50/x
3. Step 3: Cross multiply
   128,501,302.50x = 193,036,810.50 × 193,036,810.50
4. Step 4: Simplify right side
   128,501,302.50x = 37,263,210,208,012,912
5. Step 5: Solve for x
   x = 37,263,210,208,012,912/128,501,302.50
6. Step 6: Final answer
   x = 289,983,132.33