Finding the Third Proportional to 272,657,316.59 and 431,812,499.77

Step by Step Solution

1. Step 1: Write the proportion equation
   272,657,316.59 : 431,812,499.77 = 431,812,499.77 : x
2. Step 2: Convert to fraction form
   272,657,316.59/431,812,499.77 = 431,812,499.77/x
3. Step 3: Cross multiply
   272,657,316.59x = 431,812,499.77 × 431,812,499.77
4. Step 4: Simplify right side
   272,657,316.59x = 186,462,034,953,833,568
5. Step 5: Solve for x
   x = 186,462,034,953,833,568/272,657,316.59
6. Step 6: Final answer
   x = 683,869,544.70